Josephson effect in Al/Bi2Se3/Al coplanar hybrid devices
Journal article, 2014
The edge states of Topological Insulators (TI) are protected against backscattering, thanks to the topological properties arising from their band structure. Coupling a TI to a superconductor (S) can induce unconventional effects, including the creation of Majorana bound states (MBS). The fabrication of coplanar hybrid devices is a fundamental step to pave the way to the understanding of proximity effects in topologically non-trivial systems, and to a large variety of experiments aimed at the possible detection of MBS. We discuss the feasibility and some relevant properties of Al-Bi2Se3-Al coplanar proximity devices. Special attention is devoted to the design of the junction, aimed at enhancing the coupling between the electrodes and the TI.
junctions
surface-state
bi2se3
superconducting
Josephson junctions
Topological insulators
Proximity effect
Coplanar hybrid devices
transition
transport
single dirac cone
bi2te3
topological-insulator
Author
L. Galletti
Universita degli Studi di Napoli Federico II
Superconductors, oxides and other innovative materials and devices
Sophie Charpentier
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
P. Lucignano
Superconductors, oxides and other innovative materials and devices
Universita degli Studi di Napoli Federico II
D. Massarotti
Universita degli Studi di Napoli Federico II
Superconductors, oxides and other innovative materials and devices
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
F. Tafuri
Università degli Studi della Campania Luigi Vanvitelli
Superconductors, oxides and other innovative materials and devices
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Y. Suzuki
University of Tsukuba
A. Tagliacozzo
Universita degli Studi di Napoli Federico II
Kazuo Kadowaki
University of Tsukuba
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Physica C: Superconductivity and its Applications
0921-4534 (ISSN)
Vol. 503 162-165Subject Categories (SSIF 2011)
Physical Sciences
DOI
10.1016/j.physc.2014.04.047